Is CVE-2026-40223 actively exploited?

CVE-2026-40223 has no public evidence of in-the-wild exploitation as of 2026-04-27.

What is the CVSS score for CVE-2026-40223?

CVE-2026-40223 has a CVSS score of 4.7 (MEDIUM severity). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2026-40223?

Patch guidance is available from systemd project security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2026-40223.

Which products are affected by CVE-2026-40223?

1 product: systemd project systemd.

CVE-2026-40223 - remediation guidance & executive summary

Description

In systemd 258 before 260, a local unprivileged user can trigger an assert when a Delegate=yes and User=<unset> unit exists and is running.

CVSS Metrics

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector: local
Complexity: high
Privileges: low
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-696

Metadata

Primary Vendor: SYSTEMD_PROJECT
Published: 4/10/2026
Last Modified: 4/27/2026
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

systemd_project : systemd

Remediation Guidance

Executive Summary

Cite this page

CVE-2026-40223. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2026-40223

View on NIST NVD

CVE-2026-40223 vulnerability